Wap125 FirmwareOperating system · Cisco
CVE-2021-1550
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMultiple vulnerabilities in the web-based management interface of certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points could allow an authenticated, remote attacker to perform command injection attacks against an affected device. These vulnerabilities are due to improper validation of user-supplied input. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to the web-based management interface of an affected system. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the device. To exploit these vulnerabilities, the attacker must have valid administrative credentials for the device.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis is a command injection vulnerability in the web-based management interface of Cisco Small Business 100, 300, and 500 Series Wireless Access Points. Due to improper validation of user-supplied input in HTTP requests, an authenticated attacker with valid administrative credentials can inject and execute arbitrary commands with root privileges on the affected device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Wap125 FirmwareOperating system
<= 1.0.3.1
Wap131 FirmwareOperating system
<= 1.0.2.17
Wap150 FirmwareOperating system
<= 1.1.2.4
Wap351 FirmwareOperating system
<= 1.0.2.17
Wap361 FirmwareOperating system
<= 1.1.2.4
Wap581 FirmwareOperating system
<= 1.0.3.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the WAP device modelCheck the device label, web interface System Summary page, or use the CLI command 'show version' to determine if the device is a Wap125, Wap131, Wap150, Wap351, Wap361, or Wap581 modelAffected if The device is one of these six models
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Check the installed firmware versionAccess the web-based management interface and navigate to the System Summary or Administration > Firmware Upgrade page to view the current firmware version, or use CLI command 'show version'Affected if The firmware version is at or below 1.0.3.1 for Wap125/Wap581, at or below 1.0.2.17 for Wap131/Wap351, or at or below 1.1.2.4 for Wap150/Wap361
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Confirm web-based management interface is enabledAccess the device web interface on the configured IP address and verify you can log in, or check via CLI with 'show running-config | include http' to see if HTTP/HTTPS management is enabledAffected if The web-based management interface is accessible and operational
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Assess network exposure of the management interfaceReview firewall rules, ACLs, or VLAN configurations to determine if the web management interface is reachable from untrusted networks rather than only from trusted administrative networksAffected if The management interface is exposed to untrusted or external networks
A user is affected if they have a Wap125, Wap131, Wap150, Wap351, Wap361, or Wap581 device running firmware at or below the specified version limits AND the web-based management interface is accessible (even if behind authentication).
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor-supplied firmware update from Cisco for this vulnerability. Until patched, restrict web management interface access to trusted administrative networks and ensure strong, unique administrative credentials.
Fix this in Wap125 Firmware
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1550 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-1550 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data